I used to make custom wedding gowns, formal wear and costumes. People would constantly ask me to mend stuff. Zippers in jeans was the most common asked for item. They would ask what to do, my reply was "throw them out, buy new ones and get the proper size so your belly doesn't bust your zipper". The other one was, people would bring me formal dresses that had already been worn and say they would wait to dry clean it AFTER I altered it. Really, you want me to work on your dirty clothes? Then they would be surprised when I said it must be cleaned before I touch anything. I hem and do alterations, BUT only if I want to. Which lately has been none.
my new motto: My machine, My time, My decision.